Lac-Mégantic Derailment Disaster

On July 6th, 2013 a train carrying thousands of tons of oil careened into the Quebec town of Lac-Mégantic, killing dozens. How did an unmanned train cause so much destruction? What was the trail of errors that led to the disaster? 

 

Sources: 

Lac-Mégantic: This is not an Accident (Documentary Television Series directed by Phillipe Falardeau

Mégantic A Deadly Mix of Oil, Rail, and Avarice by Anne-Marie Saint-Cerny